Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001683863-20-001654-index-headers.html | 2020-04-01 11:09:00 | |
| 0001683863-20-001654-index.html | 2020-04-01 11:09:00 | |
| 0001683863-20-001654.txt | 2020-04-01 11:09:00 | |
 0001683863-20-001654-xbrl.zip | 31673 | 2020-04-01 11:09:00 |
| f2952d1.htm | 36025 | 2020-04-01 11:09:00 |
| FilingSummary.xml | 3440 | 2020-04-01 11:09:00 |
| Financial_Report.xlsx | 9007 | 2020-04-01 11:09:00 |
| pstx-20200323.xml | 124388 | 2020-04-01 11:09:00 |
| pstx-20200323.xsd | 12616 | 2020-04-01 11:09:00 |
| pstx-20200323_def.xml | 105549 | 2020-04-01 11:09:00 |
| pstx-20200323_lab.xml | 186074 | 2020-04-01 11:09:00 |
| pstx-20200323_pre.xml | 95101 | 2020-04-01 11:09:00 |
| R1.htm | 18247 | 2020-04-01 11:09:00 |
| R2.htm | 7957 | 2020-04-01 11:09:00 |
| R3.htm | 179089 | 2020-04-01 11:09:00 |
| R4.htm | 7483 | 2020-04-01 11:09:00 |
| report.css | 2767 | 2020-04-01 11:09:00 |
| Show.js | 1085 | 2020-04-01 11:09:00 |